Scarborough Village Water Hardness & Quality Report (2026)

Scarborough Village (a mid-Scarborough neighbourhood centred near Markham Road and Eglinton Avenue East — a post-war residential community in the mid-Scarborough plateau, home to a significant Afro-Caribbean and South Asian community, with the Scarborough Village area's mix of detached bungalows, semi-detached homes, and the adjacent Scarborough Village Recreation Centre serving the area's active community) receives its drinking water from the City of Toronto, drawing from Lake Ontario via the R.C. Harris Water Treatment Plant. Water is treated using ozonation, biofiltration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) standards. Hardness in this distribution zone is 221 mg/L (12.9 gpg) — classified as very hard by Health Canada, slightly softer than the broader Scarborough east corridor, reflecting a specific mid-Scarborough sub-zone distribution characteristic.

Scarborough Village's 221 mg/L is somewhat softer than the central and eastern Scarborough anomalous sub-zones (Morningside 250 mg/L, The Beaches 265.5 mg/L) but harder than the lower-hardness cluster (Kennedy Park 155 mg/L, Bendale 154.5 mg/L). The mid-Scarborough Markham Road–Eglinton corridor sub-zone appears to receive the standard Toronto R.C. Harris Lake Ontario supply with only slightly attenuated hardness compared to the central Toronto baseline.

At 221 mg/L, Scarborough Village residents face regular scale challenges — monthly to bimonthly kettle and showerhead descaling is typical. The City of Toronto provides multilingual water quality information at toronto.ca/water — important for this community's diverse Caribbean, Trinidadian, and South Asian populations. Health Canada lead service line precautionary guidance applies to the neighbourhood's substantial post-war housing stock, and residents in pre-1960 bungalows should check the City's lead service line replacement programme.